Jackson's comments aren't the first of their kind to emanate from the couple, who began dating in 2006, suggesting that they have no plans of ever getting married.

Kruger expressed her candid views on marriage in interview with Glamour in 2011, admitting, "...I don't believe in marriage. I believe in a commitment that you make in your heart."

The 36-year-old German actress, best known for her role in the 2009 Quentin Tarantino film Inglorious Basterds, takes on television as a series regular for the first time as "Detective Sonya North" on The Bridge.

Her character not only has to face the everyday perils of being a member of the El Paso Police Department, but also the complications Asperger syndrome, an autism spectrum disorder.

"[It's] very intriguing, as you can imagine, to try and explore someone's mind who...every single day of her life is something different than [how] you and I would look at things," Kruger said. "It's a real, daunting challenge to try and not just put a tick on or try to have an affectation but to really try and understand what way [people with Asperger's] look at things and why they're going to react a certain way."

As research for the role, FX connected Kruger with an autistic person from the organization Autism Speaks, with whom she has spent loads of time—more time than with her boyfriend.

"[Autism Speaks] put me in touch with this young man...who has Asperger's and he's come on board as a consultant to the show," Kruger revealed. "I've spent more days and nights [with him] than with my boyfriend for the past six months to really learn what his challenges are..."

Watch the full video for more from ET Canada's coverage of the premiere of FX's new series The Bridge, which premieres Wednesday at 10 p.m.